If the BS is molded in the fender, could it be an accessory fender? Like the Preston Petty brand back in 1970s and 80s. I don't remember Honda having special editions of models that featured or promoted accessories or brands like, Castrol, champion, kerker, Goodyear, etc

I also posted this on a 3 Wheeler site to see what kind of response & info it might generate.

While there have been no definitive "ah-ha" replies, here are a couple theories...

1- "this is some sort of promotion, possibly one of a kind. the logo is clearly part of the fender and clearly integrated into the decal as the o.p. suggests. beware those that might attempt to devalue something simply because its not in the back of their truck instead of yours."

2- "I would make an offer on it.

I'll bet it was a promo ATC or maybe a contest prize sponsored by Bridgestone.

Paul, I agree, I suspect it's some individual's creation. Has anyone seen the "Bridgestone" name split into two lines on anything authentic? I can't say for sure, but that especially looks unlikely.

If it was some "individual's creation", they sure went to a lot of effort creating a new front fender with the Bridgestone logo molded into it, as well as having the logo "branded" onto both the front & rear mud flaps and having a new rear decal made with the logo also incorporated into it.

I think this is an example of a "branded" ATC 90 . This was actually a popular thing to do back in the 70's. Anyone remember the "Levi's" AMC Gremlin?

From Google, this style bodywork used 1975-78 on the Honda ATC90. (Just look for the round headlight). None of the pictures I found showed the BS logos, so I think the seller is right with this being a special BS edition at the end of the 90 production. They switched to 70 and 110 engines after 1978. Another piece of BS history worth having by any BS fan at that price.

What's the engine serial number? Does it follow the usual Honda pattern, whatever that is? Since the ATC was an American Honda idea, could these pieces be prototypes? We need flexible, unbreakable fenders /' body parts . Call Bridgestone.